Data-only contention-based grant-free multiple access for 5G mMTC

Shizhuang ZHANG; Zhifeng YUAN; Weimin LI

doi:10.11959/j.issn.1000-0801.2019177

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Data-only contention-based grant-free multiple access for 5G mMTC

Topic:5g | 更新时间：2024-06-05

- Data-only contention-based grant-free multiple access for 5G mMTC
- Telecommunications Science Vol. 35, Issue 7, Pages: 37-46(2019)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.1000-0801.2019177
  CLC： TN929.5
- Published Online：2019-07，
  
  Published：20 July 2019
- 稿件说明：
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Shizhuang ZHANG, Zhifeng YUAN, Weimin LI. Data-only contention-based grant-free multiple access for 5G mMTC[J]. Telecommunications science, 2019, 35(7): 37-46.
DOI：

Shizhuang ZHANG, Zhifeng YUAN, Weimin LI. Data-only contention-based grant-free multiple access for 5G mMTC[J]. Telecommunications science, 2019, 35(7): 37-46. DOI： 10.11959/j.issn.1000-0801.2019177.

摘要

基于参考信号的竞争式免调度接入，参考信号的碰撞会限制其性能。考虑了一种基于纯数据（data-only）的竞争式免调度接入方案，其盲检测接收机充分利用数据本身的特点来实现多用户检测，避免了参考信号的碰撞难题以及资源开销，因而可取得高得多的业务负载。另一方面，高负载接入性能还受限于小区间干扰。data-only 接入信号不包含小区级处理，每个小区基站的盲检测接收机会对所有接收到的用户信号，包括靠近本区的邻区用户信号，进行解调译码和干扰消除。这实质上实施了小区间干扰消除，因而能明显减少邻区的强干扰，进而提升系统的负载。而且data-only盲检测接收机实现小区间干扰消除并不用增加很多额外的复杂度，这是传统小区间干扰消除方法所不具备的优点。

Abstract

For contention-based grant-free access

reference signal collision would restrict the performance. A data-only contention-based grant-free scheme was considered

where the blind detection receiver does not depend on reference signal to detect users’ information by fully exploiting the characteristics of the data itself

so the limitation from reference signal collision can be avoided

leading to a much higher traffic load. On the other hand

traffic load was further limited by inter-cell interference. Data-only signal does not include cell-specific processing

each cell station could detect all the received signals

including those from adjacent cells

through advanced blind detection receiver. This actually played the role of traditional inter-cell interference cancellation and therefore can achieve a better performance gain. And it would not introduce too much additional complexity.

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references

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YUAN Z , YU G , LI W , et al . Multi-user shared access for internet of things [C ] // 2016 IEEE 83rd Vehicular Technology Conference (VTC Spring),May 15-18,2016,Nanjing,China . Piscataway:IEEE Press , 2016 : 1 - 5 .

TIAN L , YAN C , LI W , et al . On uplink non-orthogonal multiple access for 5G: opportunities and challenges [J ] . China Communications , 2017 , 14 ( 12 ): 142 - 152 .

3GPP.Typical multi-user receivers for NOMA: R1-1801416 RAN1#92 [S ] . 2018 .

YUAN Z , HU Y , LI W , et al . Blind multi-user detection for autonomous grant-free high-overloading multiple-access without reference signal [C ] // 2018 IEEE 87th Vehicular Technology Conference (VTC Spring),June 3-6,2018,Porto,Portugal . Piscataway:IEEE Press , 2018 : 1 - 7 .

YUAN Z , LI W , HU Y , et al . Blind receive beamforming for autonomous grant-free high-overloading multiple access [J ] . arXiv: 1805.070 , 2018 .

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IEEE.16m evaluation methodology document (EMD): IEEE 802.16m-08/004r5 [S ] . 2009 .

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李卫敏 , 唐红 , 李剑 , 等 . 免调度非正交多址接入技术及其系统性能 [J ] . 中兴通讯技术 , 2019 , 2 ( 1 ): 35 - 41 .

LI W M , TANG H , LI J , et al . The grant-free NOMA technology and its system level performance [J ] . ZTE Technology Journal , 2019 , 2 ( 1 ): 35 - 41 .

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